摘要
随着省级地理信息更新的推进及国家新型基础测绘体系的建设,DEM生产及制作成为地形级地理场景成果中不可或缺的一部分。基于机载LiDAR点云数据具有的一次飞行获取面积大、受天气影响小、生产自动化程度高的特点。通过点云数据获取不同方案测试,分析不同因素对点密度的影响,制定合理高效的复杂地形下高密度点云获取方案,为后续在复杂区域获取高密度的点云成果提供可靠的借鉴,为DEM制作和地形级地理场景的生产提供了保障。
With the development of provincial geographic information updating and the construction of new national basic surveying and mapping system,DEM production and production become an indispensable part of topographic scene.Based on the Airborne Lidar Point Cloud Data,it is one of the main source data of DEM,which has the characteristics of large area,little influence of weather and high automation.In this paper,we use point cloud data to obtain different schemes,analyze the influence of different factors on point density,and make reasonable and efficient schemes to obtain high density point cloud in complex terrain.It provides reliable production reference for obtaining high-density point cloud results in complex areas,and guarantees the production of DEM and terrain-level geographical scenes.
作者
赵欢
蔡扬扬
马高锋
ZHAO Huan;CAI Yangyang;MA Gaofeng(China Coal Geomatics Group Co.,Ltd.,Xi’an 710054,China;Shaanxi Bureau of Surveying and Mapping and Geoinformation,Xi’an 710054,China)
出处
《城市勘测》
2025年第1期103-106,共4页
Urban Geotechnical Investigation & Surveying
关键词
机载激光雷达
点云
航空摄影测量
mapping
airborne LiDAR
point cloud
aerial photogrammetry
